ok I received this tv would power on but no picture so I suspected main board, keep in mind I only been doing this for 6 months and I guess I need to troubleshoot more but I jumped the gun and got a new main well it does the same, inverter wont power on but has all the 24volts, so on the master inverter the light on it lights up blue for 1 sec when I press power then the light on inverter turns off, but tv stays on, how can I find out which inverter is bad master or slave? or should I replace both? I have never had to replace a inverter the whole 6 months im doing this, except the master and slave on a 56 lg cause inverter caught on fire. model number fa2b-42406
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Re: digital lifestyles lcd inverter change??
Please read through my thread here on a 32 inch Digital Lifestyles tv that I fixed and that I still have in my exercise room.
Post pictures of your boards and we will see if the readings are similar for your inverters
https://www.badcaps.net/forum/showthread.php?t=24672Last edited by Dgtech; 04-15-2014, 12:05 PM.The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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Merry Christmas
Does anyone know how to bypass the protection ic OZ9928SN on a LG 47LG5000 inverter using a I470H1-20A MASTER pcb?
Pictures attached
Thanks in advance...12-26-2024, 05:25 AM -
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I just got this tv today and it appeared to have no backlight on. After taking off the rear cover and checking again in the dark I can see that MAYBE one quadrant is lit.. But still it's quite dim. I was going to check the LEDs with my tester, and I found LED 1 and LED 2 + pins on the wire from the inverter, but I couldn't identify a ground. Nonetheless I tried using a mounting screw on the inverter board and also the chassis as ground but regardless my tester reads 300 which is what it reads when there is no voltage draw.
I don't know how exactly to test the inverter itself. Is it... -
origanlly the backlight would come on and go off in my great ability to repair I hooked up a test light per instructed master side top 6 would only partially light slave side lit test light fine, pulled tv down to bulbs, same bulbs inside only halve lit. seems master inverter at fault tested all transformers all seem fine, pulled top transformer from master double checking test points reinstalled cleaned up all connections noted on back of master center of board dark spot, checked around that area everything on top of board seems fine, resoldered the 0 resistors plugged everything back in turned...07-16-2016, 02:32 PM -
I picked this TV out of a trash pile. When I plug it in I can hear the relay on the power supply “click” almost immediately, and then 7 seconds later there is another “click” and the power/OPC LEDs start to flash: two pulses on the power LED, one on the OPC LED. I didn't notice any sign of life from the backlight, but more on that below.....
The service manual () says this is a “DET_10V error: UR10V or A9V is not applied”, but after checking several voltages I believe the power unit is tripping off due to an overload as soon as the backlight tries to come on; this kills...
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